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NIOSH

CHLOROACETIC ACID

ICSC: 0235

Chloroethanoic acid
Monochloroacetic acid
MCA
C2H3ClO2 / ClCH2COOH
Molecular mass: 94.5
ICSC # 0235 		CAS # 79-11-8
RTECS # AF8575000
UN # 1751
EC # 607-003-00-1
May 05, 2003 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION

In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
•INHALATION Burning sensation. Cough. Sore throat. Laboured breathing. Vomiting. Convulsions. Unconsciousness. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
•SKIN MAY BE ABSORBED! Redness. Pain. Skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES Redness. Pain. Severe deep burns.
Face shield or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Abdominal pain. Burning sensation. Shock or collapse. Convulsions. Unconsciousness.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place.
Separated from strong bases, food and feedstuffs . Dry. Well closed.
Do not transport with food and feedstuffs.
T symbol
N symbol
R: 25-34-50
S: 1/2-23-37-45-61
UN Hazard Class: 6.1
UN Subsidiary Risks: 8
UN Packing Group: II
ICSC: 0235 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

CHLOROACETIC ACID

ICSC: 0235

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS , HYGROSCOPIC CRYSTALS , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes including hydrogen chloride , phosgene . The solution in water is a medium strong acid. Attacks metal.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK: IIb (not established but data is available) (DFG 2004).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and through the skin and by ingestion.

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes , the skin and the respiratory tract. Inhalation of aerosol may cause lung oedema (see Notes). The substance may cause effects on the cardiovascular system and central nervous system , resulting in cardiac disorders , convulsions and kidney impairment . Exposure at high levels may result in death. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 189°C
Melting point: see Notes
Density: 1.58
Solubility in water: very good
Vapour pressure, Pa at 25°C: 8.68
Relative vapour density (air = 1): 3.26
Flash point: 126°C c.c.
Auto-ignition temperature: 470°C
Explosive limits, vol% in air: 8 -?
Octanol/water partition coefficient as log Pow: 0.34

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Melting point of alpha form = 63°C, beta form = 56.2°C, gamma form = 52.5°C. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Other UN numbers: 1750 Chloroacetic acid, solution; 3250 Chloroacetic acid, molten. Card has been partly updated in October 2005. See section Occupational Exposure Limits.
Transport Emergency Card: TEC (R)-61S1751

NFPA Code: H 3; F 1; R 0;

ADDITIONAL INFORMATION



ICSC: 0235 CHLOROACETIC ACID
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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